Carving-machine.



No. 692,356. Patbnted Feb. 4, 190 2.

J. B. RUBIN.

'CARVIN-G MACHINE.

(Application fild June 17, 1901.} (No Model.)

6 Sheets-Sheet I.

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No. 692,356. Patented Feb. 4, I902.

J. B. RUBIN.

GARVING MACHINE.

(Application filed June 1'7, 1901.) (N0 Modem 6 Sheets-Sheet 2.

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J. B. ROBIN.

GARVING MACHINE.

A lication filed June 17, 1901. v (No Model.) 6 Sheets-Sh'eat 3,

No. 692,356. 7 Patented Feb. 4, I902.

Patented Feb. 4. I902; J. B. ROBIN. CARVING MACHINE.

(Application filed June 1'7, 1901.)

6 Sheetsheet 4,

(No Model.)

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No. 692,356. Patented Feb. 4, I902.

J. B. ROBIN.

GARVING MACHINE.

(Application filed Julie 17, 1901. (No Model.) 6 Sheets-Sheet 5.

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chine.

UNTTEE STATES PATENT OFFICE.

JEAN B. ROBIN, OF ST. PAUL, MINNESOTA.

CARVlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 692,356, dated February4, 1902.

Application filed June 17, 1901. $erial No. 64,838. (No model.)

T to whom, it may concern.-

Be it known that I, JEAN B. ROBIN, a citi zen of France, residing at St.Paul, in the county of Ramsey and State of Minnesota, (whose post-officeaddress is 66 West Indiana avenue,) have invented certain new and usefulImprovements in Carving-Machines, of which the following is aspecification.

My invention relates to improvements in woodworking-machines,its objectbeing particularly to provide a machine for cutting ornamental patternsin wood, and particularly in the strips and corners of door and windowcasings.

To this end my invention consists in the features of construction andcombination hereinafter particularly described and claimed.

In the accompanying drawings, forming part of this specification, Figure1 is a rear elevation of my improved machine. Fig. 2 is a plan view.Fig. 3 is a longitudinal vertical'section of the upper portion of myina- Fig.4 is an enlarged plan of one end of the machine, the lowerframework not being shown. Figs. 5 and 6 are details of a clamping-slideforming part of my machine. Fig. 7 is an end elevation of my improvedmachine. Figs. 8 and 9 are details of part of the driving-gear. Fig. 10is an end view of the feed mechanism shown on line 00 a: of Fig. 3. Fig.11 is a vertical cross-section of the same, taken on line y y of Fig. 3.Fig. 12 is a plan View of the supporting-cradle for the feed mechanism.Fig. 13 is a rear elevation of the upper part of my machine shownarranged for cutting designs in corner-blocks. Fig. 14 is a plan view ofthe same. Fig. 15 is a longitudinal section of a block-holding deviceforming part of my machine. Fig. 16 is a front elevation of said device.Fig. 17 is a detail of a cutter forming part of my machine. Fig. 18 is afront view of a knifesupporting plate used in the block-cutting machine.Fig. 19 is a cross-section of the same. Fig. 20 is a longitudinalsection of cutters carried by said plate. Figs. 21 to 24 are details ofone of the cutters carried by said plate. Fig. 25 is a plan view ofastrip after it has been acted upon by my machine. Fig. 26 is across-section of the same. Figs.

27 and 28 are details of corner-blocks, showing general character ofdesigns; and Fig. 29

is a section of a block in which one out has been made by the cuttershown in Fig. 17.

In the drawings,A represents the frameof the machine, provided upon itstop with 1011- gitudinal guides or rails 2. Slidably sup ported upon therails at one end of the machine is a carriage B, which forms a supportfor the main cutter. This carriage consists of the bed-plate 3, slidableupon the rails 2. Secured upon the top of the bed-plate 3 by means ofbolts 4 is the frame 5. The bolts 4 pass through transverse slots 6 inthe upper frame of the carriage, so as to provide for itslateraladjustment. Havingjournal-support in the upper frame of thecarriage is the shaft 7, carrying upon one end the cutter 8. Theopposite end of the shaft bears against a screw 9, threaded through theend of the carriage. By means of this screw the shaft may belongitudinally adjusted. Secured upon the shaft is a pulley 10,connected by a belt 11 with a pulley 12, mounted upon the maindriving-shaft 13. The cutter 8 consists of a blade 14, secured upon thehead 15, which is secured upon the end. of the shaft 7. As shown in thedrawings, the blade 14 surrounds a circular head 15, forming a circularcutter slightly larger than the head. One end of the blade 14 is carriedoutward and has socured to its outer end a second knife 16 to completethe design. Arranged against the rear of the cutter-head is an arm 17,one end of the arm being connected with the end of the blade 14 and theopposite end being weighted, as shown, to keep the cutter balanced. Thecarriage B is caused to travel upon the rails 2 by means of the groovedcam 18, secured upon the counter-shaft 19, which is journaled in theupper portion of the frame A. The arm 20, secured to the under side ofthe carriage, carries upon its free end a downwardly-projecting roller21, which projects into the groove 22 of the cam 18. In order to forcethe cuttings out of the center portion of the knife 14 after a out hasbeen made, I make the end of the shaft 7 hollow and slidably arrangetherein a rod 23, carrying upon its outer end a plunger 24, standingwithin the central portion of the cutter-blade 14.

The opposite end of the rod23 is provided the yoke 37.

the cross-pin project into a collar 27, surrounding the shaft 7 andadapted to rotate therewith. The collar 27 is formed with acircumferential groove 28, into which projects the end of an arm 29,which is secured to the end of the machine-frame A, as shown in Fig. 3.The arm 29 prevents longitudinal movement of the collar 27, whileallowing it to rotate freely with the shaft 7. Thus as the shaft 7 ismoved longitudinally in the travel of the carriage it slides in thecollar 27, cansing relative movement between the plunger 24 and the endof the cutter-blade 14 In order to hold the piece of material beingworked upon the front of the cutter 8 and to carry said piece throughthe machine, I provide the following-described parts.

.0 represents a cradle secured to the rails in front of the cutter 8 bymeans of bolts 30. The cradle is formed at its forward end with thecentral upwardly-projecting supportingarm'31, which forms the back platefor the material 32, as shown in Fig. 3. Secured to the sides of thecradle C and projecting upwardly in line with the support 31 are thearms 33. These arms are formed with openings 34 to allow the attachmentof strips to provide for curved strips of material or to guide straightpieces through at any angle.

In order to hold the material, which in the drawings is a strip ofgrooved molding designed for a casing, against the supports 31 and 33, Iprovide the. device shown in Figs. 5 and 6. This device consists of thearms 35, preferably of'spring material, each of said arms being slidablyconnected by a bolt 36 to The bolt 36 passes through a slot in the arm35. The yoke 37 rests in the bottom of the cradle O, and its rear end.passes over the cam 38, as shown in Fig. 10, and is provided with adownwardly-projecting roller 39, which bears againstthe face of the cam38 to cause the yoke, with the arms 36, to be horizontally reciprocated.To the inner sides of the upwardly-projecting portions of the arms issecured the block 40 by means of bolts 41. In order to provide for thevertical adjustment of the block, the bolts 41 pass through slots 42 inthe arms 35. The face of the block 40 is formed to fit the contour ofthe material 32, soas to hold the same supported. The block 40 is formedwith anopening43,through which the cutter works.

In order to feed the material through the machine, I provide thefollowing-described parts: Secured in the lugs 44 upon the corners ofthe cradle O are the transverse shafts 45, and slidable upon theseshafts is the carriage D, as shown best in Figs. 4 and 10, the movementof the carriage upon the shafts being limited by the adjustable stops46. The forward end of the carriage 'D is provided with a pair ofdownwardly-projecting fingers 47 and 48, standing upon opposite sides ofa cam 49, secured upon the shaft 19. The finger 47 is an integral partof the carriage, and the finger 48 is ad 3 ustably connected thereto bymeans of a bolt 50. Upon the four corners of the carriage D are the upwardly-projectin g lugs 51, through which slidably pass thelongitudinally-arranged rods 52, having their forward ends 53 pointed,as shown. Secured to the rods 52 intermediate of the lugs 51 by means ofthe screws 54 is the yoke 55. The center of said yoke extendsdownwardly, as shown in Figs. 3 and 10, and carries a roller 56,extending in to the groove 57 of the cam 58, mounted upon the shaft 19.By means of the just-described parts the material will be fed throughthe machine,ashereinafter described.

The shaft 19 is operated by a belt 59, running over a pulley 60 upon theshaft 19 and apulley 61 upon the counter-shaft 62. The counter-shaft 62is connected with the main driving-shaft 13 by belts 63 and 64. Thepulley 65, supporting one end of the belt 63, is forced into connectionwith the pulley 61 by the clutch 66,actuated by the lever 67. Upon theopposite end of the machine is journaled the shaft 67, carrying theplate 68, upon the face of which are secured the pair of knives 69 andthe central knife 70. This part of the machine is adapted to be used inthe making of the corner-blocks shown in Figs. 27 and 28.

As shown in Figs. 1 to 4, inclusive, the machine is fitted up for themaking of the strip shown in Fig. 25. In this operation the strip 32 isnormally held by the clamping of the arms 35 against the face of theplate 31.

The turning of the shaft 19 carries the cutter forward by means of thecam 18 to cut one of the circles shown in the strip. As soon as this iscut the cam draws the cutter away from the material, and as the plungerstands stationary the cuttings will be forced from the center of thecutter and will drop to the floor. As the knife is carried away from thematerial the cam 58 actuates the yoke 55 to carry the rods 52 forwardinto the material. As this takes place the cam 38 is freed from theroller 39 to free the clamping device from the material. As the ends ofthe rods 52 sink into the work they carry the same slightly away fromthe support 31, and the continued rotation of the shaft 19 actuates thecam 49 against the finger 47 to move the carriage D,

thus moving the rods laterally to carry the material a predetermineddistance through the machine. The continued rotation of the shafts thenactuates the cams to withdraw the rods from the material, to slide thecarriage D back to normal position, and to actuate the clamping-arms 35to again carry the material against the support 31, in position for asecond operation of the cutter.

In Figs. 13 and 14 the machine is shown fit-' ted up to cut designs uponcorner-blocks, as illustrated in Figs. 27 and 28. In order to adapt themachine for this purpose, I remove the cradle O and supported parts, theshaft 19, and the means for sliding the main cutter. I then place uponthe rails 2, intermediate of the cutter 8 and the plate 68, the carriageE, formed with grooves 71 to receive fig the rails. In theupwardly-projecting post 2 upon the carriage E is supported, by means ofthe pivot 73, the arm 74, tothe Outer end of which is secured, by meansof the bolt 75, the plate 76. Intermediate of the plate and arm isarranged the sleeve 77, provided with a series of slots 78, into one ofwhich slots is adapted to project one of the posts 79, projectingupwardly from the opposite ends of the carriage E. Slidable in a groovein the face of the plate 76 are the clamps 81 and 82. The clamp 81 issecured in adjusted position upon the plate by means of a bolt 83,projecting into a slot 84 in the plate. The clamp 82 is turned uponitself to form a spring, as shown in Fig. 15, and is secured in adjustedposition to the plate by means of a bolt 86, passing through the slot87in the plate. In order to limit the movement of the carriage E, Iprovide stops 88, secured to the side of the machine-frame, said stopsbeing each held in adjusted position by a bolt 89, passing through aslot 90 in the stop. In order to secure a block upon the face of theplate 76, the end of the spring-clamp 82 may be sprung outward by theblock to bring said block within the clamps, when the spring of theclamp 82 will securely hold the block in place. Each of the clamps, asshown in Fig. 16, is formed with a notch 91 to receive acorner of theblock. The clamps are adapted to be adjusted for blocks of differentsizes.

In Figs. 20 to 24 are shown details of the cutter 69. This is made up ofthe block 92, projecting through an opening 93 in the plate 68 and heldtherein by the nut 94. The block 92 is provided with a central opening95, in which is arranged the knife 96. Said knife is secured in positionby means of the wedgeshaped plug 97, adapted to be tightened by a nut98.

In operation the carriage E is moved by hand to bring the block of woodinto contact with the cutter 8. This cutter will cut a circle in thewood, as illustrated in Fig. 29, by holding the arm 74 at differentangles, and by laterally adjusting the part 5 of carriage B the circlescan be differently positioned upon the block, as shown in Figs 27 and28. As shown in Fig. 28, the circles overlap, the different circlesbeing made by turning the plate 76 after each cut, so that the post 79Will rest in the next succeeding slot. A central raised portion is thusleft. \Vhen the series of circles have been cut, the arms turninto thefullline position shown in Fig. 13 and the block is held against thecutters 69 and 70. The rotation of the plate 68 will cause the knife tocut the surrounding bead 98 and the central cutter to form thecentrally-raised portion 99. By adjusting the part 5 of carriage B andby adjusting the height of the post 79 in order to hold the arm 73 atdifferent angles and by using sleeves 77 with the different number ofslots a great variety of designs can be made.

I claim- 1. In a machine of the class described, the combination withthe supporting-framework, and a rotatable cutter carried thereby, of amaterial-su pport arranged in front of said cutter, a clamp normallyholding a piece of material against said support, a carriage slidabletoward and from said support, and slidable parallel to the face of saidsupport, means carried by said carriage to engage with said material andcarry the same a predetermined distance through the machine, and meansfor releasing the clamp from the material as the same is carried throughthe machine.

2. In a machine of the class described, the combination with theframework, and a rotatable cutter carried thereby, of a materialsupportarranged in front of said cutter, a clamp normally holding a piece ofmaterial against said support, a carriage slidable toward and from saidsupport, and slidable parallel to the face thereof, means for actuatingsaid clamp to-release said material, and means carried by said carriageto engage with said material, as and for the purpose set forth.

3. In a machine of the class described, the combination with thesupporting-framework, of a rotatable cutter slidably supported thereby,a carriage slidably supported in front of said cutter, means for holdingthe material against the face of said carriage when the cutter iscarried toward the material, means for releasing the material when'thecutter is carried away, and simultaneously moving the material apredetermined distance through the machine, and means for simultaneouslyforcing the cuttings from the cutter.

4. In a machine of the class described, the combination with thesupporting-framework, of a rotary cutter carried thereby, adrivingshaft, a cradle supported in front of said outter, clamping meansfor holding a piece of material against said cradle, a carriagetransversely slidable in said cradle, pointed rods slidably supported insaid carriage, and operating connections between said shaft and saidclamping means, carriage and rods, as and for the purpose set forth.

5. In a machine of the class described, the combination wit-h thesupporting-framework, of a rotatable cutter carried thereby, adriving-shaft, a cradle supported in front of said cutter, a clampingdevice slidable longitudinally of said cradle for holding a piece ofmaterial against the face thereof, rods secured transversely of saidcradle, a carriage slidable thereon, pointed rods slidably supported bysaid carriage, and means operated from said shaft for releasing saidclamping means from said material and for actuating said carriage andpointed rods to carry said material a predetermined distance through themachine.

6. In a machine of the class described, the combination with thesupporting-framework, of a rotary cutter carried thereby, adrivingshaft, a cradle supported in front of said cut- & 692,356

ter, a clamping device slidable longitudinally I slidably supported bysaid carriage, and an 10 of said cradle for holding a piece of materialI operating connection between said rods and against the face of saidcradle, an operative driving-shaft.

connection between said clamping device and In testimony whereof I affixmy signature driving-shaft, rods secured transversely of in presence oftwo witnesses.

said cradle, a carriage slidably supported JEAN B. ROBIN. upon saidrods,downwardlyproj ecting fingers Witnesses: upon said carriage, a camcarried by said d'riv- H. S. JOHNSON,

ing-shaft between said fingers, pointed rods 1 EMILY EAsTMaN.

